Mythbusters proved it was buoyant enough. James Cameron has since clarified the physics: It wasn't about buoyancy, but buoyancy + thickness . Jack tries to get on, and the raft sinks lower, submerging him in freezing water. He chose to stay in the water to save her. Also, Rose is in shock, wearing a heavy wool coat, and likely suffering from hypothermia.
But on paper, "Jack and Rose" shouldn’t work. In reality, it works too well . Leonardo DiCaprio and Kate Winslet had an electric chemistry that felt dangerously real. When Rose says, "I’m flying," at the bow of the ship, she isn’t just acting—she is embodying every person who has ever felt liberated by love. Titanic Movie Complete
Watch the ship rise. Watch the champagne glasses clink. Watch the water rush in. And try not to cry when Rose opens her eyes at the end on the grand staircase, surrounded by everyone who sailed away before her. Mythbusters proved it was buoyant enough